fcl-db:fcl-db: base: fix streaming (restoring) of ftWideMemo fields in XMLDatapacketReader
+ extend test of streaming of "FieldDataset" to test all fields (not only Blob and Memo)


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25538 3ad0048d-3df7-0310-abae-a5850022a9f2